ESLint Flat Config (eslint.config.mjs) 対話型ビルダー

// ============================================================================
// ESLint 9+ Flat Configuration File
// Generated by ToolsAA ESLint Flat Config Builder (https://toolsaa.com)
// Format: ESM (eslint.config.mjs)
// ============================================================================

import js from "@eslint/js";
import tseslint from "typescript-eslint";
import nextPlugin from "@next/eslint-plugin-next";
import jsxA11y from "eslint-plugin-jsx-a11y";
import simpleImportSort from "eslint-plugin-simple-import-sort";
import unusedImports from "eslint-plugin-unused-imports";
import tailwind from "eslint-plugin-tailwindcss";
import prettier from "eslint-config-prettier";
import globals from "globals";

export default tseslint.config(
  // 1. Global Ignores
  {
    ignores: [
      "node_modules/**",
      ".next/**",
      "out/**",
      "dist/**",
      "build/**",
      "coverage/**",
      "*.config.js",
      "*.config.mjs",
    ],
  },

  // 2. Base ESLint Recommended Rules
  js.configs.recommended,

  // 3. TypeScript Rules
  ...tseslint.configs.recommendedTypeChecked,
  ...tseslint.configs.stylisticTypeChecked,
  {
    languageOptions: {
      parserOptions: {
        projectService: true,
        tsconfigRootDir: import.meta.dirname,
      },
    },
  },

  // 4. Next.js 15 App Router Integration
  {
    files: ["**/*.{js,jsx,mjs,ts,tsx}"],
    plugins: {
      "@next/next": nextPlugin,
      "jsx-a11y": jsxA11y,
    },
    rules: {
      ...nextPlugin.configs.recommended.rules,
      ...nextPlugin.configs["core-web-vitals"].rules,
      ...jsxA11y.configs.recommended.rules,
    },
  },

  // 5. Tailwind CSS Class Sorting & Linting
  ...tailwind.configs["flat/recommended"],

  // 7. Environment & Runtime Globals
  {
    languageOptions: {
      globals: {
        ...globals.browser,
        ...globals.node,
        ...globals.es2024,
      },
    },
  },

  // 8. Custom Rules & Directives
  {
    plugins: {
      "simple-import-sort": simpleImportSort,
      "unused-imports": unusedImports,
    },
    rules: {
      "no-console": "warn",
      "prefer-const": "error",
      "@typescript-eslint/no-unused-vars": [
        "warn",
        {
          argsIgnorePattern: "^_",
          varsIgnorePattern: "^_",
          caughtErrorsIgnorePattern: "^_",
        },
      ],
      "@typescript-eslint/no-explicit-any": "warn",
      "react-hooks/exhaustive-deps": "warn",
      "simple-import-sort/imports": "error",
      "simple-import-sort/exports": "error",
      "unused-imports/no-unused-imports": "error",
      "@next/next/no-html-link-for-pages": "error",
      "@next/next/no-img-element": "warn",
    },
  },

  // 9. Prettier Formatting Harmony (Must remain at the very end to disable conflicting rules)
  prettier,
);